Shortly ahead of arriving in the UK, Donald caused a stir on Twitter by criticising the London Mayor, Sadiq Khan, writing: "@SadiqKhan, who by all accounts has done a terrible job as Mayor of London, has been foolishly 'nasty' to the visiting President of the United States, by far the most important ally of the United Kingdom. He is a stone cold loser who should focus on crime in London, not me. Kahn reminds me very much of our very dumb and incompetent Mayor of NYC, de Blasio, who has also done a terrible job - only half his height. In any event, I look forward to being a great friend to the United Kingdom, and am looking very much forward to my visit. Landing now!"
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A spokesperson for Sadiq responded: "This is much more serious than childish insults which should be beneath the President of the United States."